Sylvania 50370 QTP3x40TT5/277 PSN-B

Sylvania QTP 3x40TT5/277 PSN-B — Item #50370 — 3-Lamp PROStart Electronic Ballast, DL40/TT5, 277V

The Sylvania QUICKTRONIC QTP 3x40TT5/277 PSN-B (Item #50370) is a 3-lamp PROStart electronic ballast for 40W TT5 (DL40) fluorescent lighting systems, operating on 277V line voltage.

Technical Specifications

Product Overview

This is a dedicated 277V ballast — not a universal-voltage design; confirm your line voltage matches before ordering.

Compatible Applications

• Commercial and retail lighting
• Hospitality and institutional facilities
• Energy retrofits and new construction using 40W TT5 (DL40) fluorescent fixtures.

Before Ordering – Verify

• Confirm dedicated input voltage: 277V only — this is not a universal-voltage ballast, and it is not interchangeable with a differently-voltage-rated DL40 ballast.

Safety and Handling Guidelines

• Install per NEC guidelines and local electrical code; installation should be performed by a qualified electrician.
• Disconnect power at the breaker before servicing, wiring, or replacing this ballast.
• Allow the ballast to cool before handling if recently in operation.
• Dispose of a failed or replaced ballast per local electronic-waste regulations.

Compliance

• UL Listed for use in commercial and industrial fluorescent/HID fixtures.
• Covered by the SYLVANIA QUICK 60+ system warranty, the industry's first and most comprehensive lamp-and-ballast system warranty.

Ordering Information

• Item #50370, model designation QTP 3x40TT5/277 PSN-B.
• For wholesale pricing, bulk availability, or help confirming the correct ballast for your fixture, contact ADL Supply.

For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.